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Phylogenetic networks based on the molecular clock hypothesis

机译:基于分子钟假说的系统发生网络

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A classical result in phylogenetic trees is that a binary phylogenetic tree adhering to the molecular clock hypothesis exists if and only if the matrix of distances between taxa is ultrametric. The ultrametric condition is very restrictive. In this paper we study phylogenetic networks that can be constructed assuming the molecular clock hypothesis. We characterize distance matrices that admit such networks for 3 and 4 taxa. We design an efficient algorithm for a special class of phylogenetic networks that can detect the existence of a network and constructs it.
机译:系统发育树的一个经典结果是,当且仅当分类群之间的距离矩阵是超度量的时,才存在遵守分子时钟假设的二元系统发育树。超测条件是非常严格的。在本文中,我们研究了可以在假设分子时钟假设的情况下构建的系统发育网络。我们表征了允许此类网络用于3和4类群的距离矩阵。我们为一类特殊的系统发育网络设计了一种有效的算法,该算法可以检测网络的存在并进行构建。

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